diff --git a/custom_components/xiaomi_miot/core/device_customizes.py b/custom_components/xiaomi_miot/core/device_customizes.py
index bf7390ca6..0e9d99fda 100644
--- a/custom_components/xiaomi_miot/core/device_customizes.py
+++ b/custom_components/xiaomi_miot/core/device_customizes.py
@@ -1793,35 +1793,7 @@
         'brightness_for_off': 2,
     },
     'zhimi.fan.fb1': {
-        'extend_miot_specs': [
-            {
-                'iid': 2,
-                'properties': [
-                    {'iid': 5, 'value-range': [30, 120, 30]},
-                    {'iid': 6, 'value-range': [30, 90, 30]},
-                ],
-            },
-            {
-                'iid': 5,
-                'properties': [
-                    {
-                        'iid': 6,
-                        'value-list': [
-                            {'value': 'left', 'description': 'Turn Left'},
-                            {'value': 'right', 'description': 'Turn Right'},
-                        ],
-                    },
-                    {
-                        'iid': 7,
-                        'value-list': [
-                            {'value': 'up', 'description': 'Turn Up'},
-                            {'value': 'down', 'description': 'Turn Down'},
-                        ],
-                    },
-                ],
-            },
-        ],
-        'switch_properties': 'alarm,horizontal_swing,vertical_swing,oscillating,h_swing_back,v_swing_back',
+        'switch_properties': 'alarm,horizontal_swing,vertical_swing,oscillating,h_swing_back,v_swing_back,brightness',
         'number_properties': 'timing',
         'percentage_property': 'stepless_fan_level',
         'select_properties': 'mode,horizontal_angle,vertical_angle',
diff --git a/custom_components/xiaomi_miot/core/miot_specs_extend.json b/custom_components/xiaomi_miot/core/miot_specs_extend.json
index b16e46ad0..4d4d20ab2 100644
--- a/custom_components/xiaomi_miot/core/miot_specs_extend.json
+++ b/custom_components/xiaomi_miot/core/miot_specs_extend.json
@@ -1681,6 +1681,34 @@
     }
   ],
 
+  "zhimi.fan.fb1": [
+    {
+      "iid": 2,
+      "properties": [
+          {"iid": 5, "value-range": [30, 120, 30]},
+          {"iid": 6, "value-range": [30, 90, 30]}
+      ]
+    },
+    {
+        "iid": 5,
+        "properties": [
+            {
+                "iid": 6,
+                "value-list": [
+                    {"value": "left", "description": "Turn Left"},
+                    {"value": "right", "description": "Turn Right"}
+                ]
+            },
+            {
+                "iid": 7,
+                "value-list": [
+                    {"value": "up", "description": "Turn Up"},
+                    {"value": "down", "description": "Turn Down"}
+                ]
+            }
+        ]
+    }
+  ],
   "zhimi.fan.za4": [
     {
       "iid": 2,
@@ -1692,7 +1720,7 @@
       ]
     }
   ],
-  
+
   "zhimi.humidifier.ca4": [
     {
       "iid": 2,